Ah, well, I had been thinking about this being caused by overworking. I run my own business, but I've been trying to do the same amount of work I would do in a much smaller timespan, due to some issues earlier in the year... so I figured I was just burning myself out, and it still could be that...
...but, pregnancy isn't out of the realms of possibility either.

*She rubs her head.*

I've just been so busy, I hadn't even thought of it.